| Peak Ejection Time | Academic & Science |
| Personal Electronic Transactor | Academic & Science |
| Pelotas | Airport Code |
| People, Events, and Technologies | Business |
| Petrel Resources, P.L.C. | Business |
| Peters MacGregor Investments, LTD. (de-listed 29 May 2013) | Business |
| Planning, Engineering, and Testing | Business |
| Polyethylene Terephthalate | Chemistry |
| Poly-ethylene Teraphthalate | Chemistry |
| Physical Education Teacher | Community |
| Progressive Educational Tools | Community |
| Prevention, Education, and Treatment | Community |
| Program for Effective Teaching | Community |
| Personal Energy Transportation International | Community |
| Personal Education Technology | Community |
| Paperless Employee Travel | Community |
| Personal Electronic Terminal | Community |
| IEEE Workshop on Power Electronics in Transportation | Community |
| Parent Effectiveness Training | Community |
| Personal Electronic Translator | Computer Hardware |
| Personal Exploration Terminal | Computer Hardware |
| Privacy Enhancing Technologies | Computing |
| Performance Evaluation Tool | Computing |
| Perl Embedded Template | Computing |
| Program Editor Top Overflow File | Computing |
| Programming Environment and Training | Computing |
| Platform Event Trap | Computing |
| Pattern Editing Toolkit | Computing |
| Battle Pets | Cryptocurrency |
| PeaceTokenFinance | Cryptocurrency |
| Pile Echo Tester | Earth Science |
| Precollege Engineer Training | Educational Institute |
| Post-etch Treatment | Electronics |
| Preliminary English Test | Exams |
| Wordperfect Library Program Editor Top Overflow File | File Type |
| Position Emission Tomography | General |
| Power Estimation Tool | General |
| Precise Event Timer | General |
| Petrol Elementary Tools | General |
| Personal Expense Tracker | General |
| Positive Electrode Terminal | General |
| Personal Energy Transport | General |
| People Equipment Transport | General |
| Petrol | General |
| Personal Extra Terrestrial | General |
| Personal Electronic Thing | General |
| Personal Empowerment Through | General |
| Postitron Emission Tomography | General |
| Programm For Effective Teaching | General |
| Positronic Emission Tomagraphy | General |
| Positron Emission Tomographyanti | General |
| Positron Emission Tomographypsycheducation | General |
| Positive Emission Tomography | General |
| Personal Energy Transportation | Governmental |
| Pedophile Eradication Team | Governmental |
| Project Executive Team | Jobs |
| Positive Effective Therapy | Medical |
| Perfusionist Emergency Technician | Medical |
| Psychiatrist Emergency Technician | Medical |
| Physician Emergency Technician | Medical |
| Phlebotomist Emergency Technician | Medical |
| Psychic Empathetic And Telepathic | Medical |
| Physiological Exploratory Testing | Medical |
| Positron Emission Tomography | Medical |
| Patulous Eustacian Tube | Medical |
| Post-Exposure Treatment | Medical |
| Heeerrrrrreeee Kitty, Kitty, Kitty, Kitty | Medical |
| Pancreatic Endocrine Tumour | Medical |
| Paraffin-Embedded Tissue | Medical |
| Partial Exchange Transfusion | Medical |
| Peritoneal Equilibration Test | Medical |
| Pancreatic Endocrine Tumor | Medical |
| Petrolatum | Medical |
| Pre-Eclamptic Toxaemia | Medical |
| Psychiatric Emergency Team | Medical |
| Personalized Entertainment Truck | Messaging |
| Pilotline Experiment Technology | Military and Defence |
| Photosynthetic Electron Transport | Physics Related |
| Pelotas, Rio Grande do Sul, Brazil | Regional |
| Peformance Evaluation Tool | Softwares |
| Planetary Exploration Team | Space Science |
| Phase Elapsed Time | Space Science |
| Physical Endurance Test | Sports |
| Posture Exercise and Time | Sports |
| Preferred Equity Traded | Stock Exchange |
| Potentially Exempt Transfer | Stock Exchange |
| Privacy Enhancing Technology | Technology |
| Pelotas International Airport | Transport & Travel |
